The certification mark, as intended to be used by authorized persons, is intended to certify that these persons, who are performing solar thermal systems technology installations and related services, have demonstrated professional knowledge competency to apply the appropriate professional skills necessary in the field of solar thermal systems technology, in accordance with the requirements established by the certifier, namely, the completion of educational and/or experiential requirements; appropriate professional/occupational experience; successful completion of a knowledge-based examination; and, continuing education and installation requirements.